Packing.



PATENTED SEPT. 18, 1906.

0. RESTEIN.

PACKING.

APPLIOATION FILED MAY 19, 1905.

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UNITED STATES PATENT orrron.

PACKING.

Specification of Letters Patent.

Patented Sept. 18, 1906.

Application filed May 19, 1905. Serial No. 261,112.

To all whom it may concern:

Be it known that I, CLEMENT REsTEIN, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Packing, of which the following is a specification.

Objects of the present invention are to provide a ring packing which shall be, in effect, substantially continuous, yet capable of easy application and removal, while at the same time the parts of the packing are capable of sliding and other motions which impart to it the characteristic commonly called self-sealing, meaning thereby that the packing is automatically tightened under the influence of pressure and is slackened upon the release of pressure, whereby friction and wear are reduced.

To these and other ends hereinafter set forth the invention comprises the improvements to be presently described and finally claimed.

The nature, characteristic features, and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which Figure 1 is an elevational view of a ring packing embodying features of the invention. Fig. 2 is an elevational View, partly in section, showing two of the oints. Fig. 3 is a similar view showing others of the joints. Figs. 4 and 5 are perspective views illustrating the interior parts of the packing. Fig. 6 is a similar view illustrating the other part of the packing, and Fig. 7 is a transverse sectional view of the packing.

In the drawings, 1 is an internally-grooved ring or annulus split upon a diagonal line, as shown at 2. The body 3 of this ring may be of elastic material, as rubber, and the flanges 4 of cemented textile material.

5 and 6 are rings of triangular cross-section split on a diagonal line. These rings 5 and 6 are mounted in the grooved portion 7 of the ring or annulus 1., so as to be capable of rotation therein, and they are arranged with their diagonal faces in contact, so that they may slide or move, as it were, through each other. These rings 5 and 6 may consist of l yers of duck and rubber cemented together. There may be applied to the rim of the ring 1for. example, by cementinga strip of textile material 8, and the various parts may be provided with proper lubricants, including graphite. In use the rings 5 and 6 are rotated into such position that their diagonallysplit ends are in line or flush with the diagonally-split ends of the ring 1. Thereupon the packing as a whole is sprung around the part which it is to pack, the rings 5 and 6 being, however, rotated, for example, in opposite directions, so that the three joints are out of alinement. In Fig. 1 they are shown as arranged ninety degrees apart but the exact distance apart is notmaterial so long as the oints are sufhcicntly broken to cause the packing to constitute, in effect and considered as a whole, a continuous piece. Several of the described packing-rings may be used together, and under varying conditions of pressure the inner rings 5 and 6 slide sidewise, and thus grip the part which they pack with varying pressure, and the ring 1'facili tates this operation.

It will be obvious to those skilled, in the art to which my invention appertains that modifications may be made in detail without departing from the spirit thereof. Hence the invention is not limited. other than the prior state of the art may require; but,

Having thus described the nature and obj ects of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A packing comprising the combination of an internally-grooved split ring or annulus having a body and flanges, and two complemental split rings of triangular cross-section rotatably mounted with their diagonal faces in contact in the groove between the body and flanges of the first-mentioned ring, substantially as described.

2. A packing comprising the combination of an internally-grooved ring or annulus having a body and flanges and split on a diagonal line, and a pair of complemental rings of triangular cross-section split on diagonal lines and rotatably mounted in the groove between the body and flanges of the firstmentioned ring with their diagonal faces in contact, substantially as described.

3. A packing comprising the combination of a grooved split ring consisting of a rubber body and cemented textile flanges, and two coinplemental rings consisting of alternate layers of duck and rubber and of triangular cross-section rotatably arranged with their diagonal faces in contact in the groove of the first-mentioned ring, substantially as described.

4. A packing comprising the combination faces in contact in the groove of the first-menof a grooved split ring consisting of a rubber tioned ring, substantially as described. IO body.provided at its rim with a textile cover In testimony whereof I have hereunto and having two inwardly extending oesigned my name.

mented textile flanges, and two comple- CLEMENT RESTEIN. mental rings consisting of alternate layers of Witnesses:

duck and rubber and of triangular cross-sec- WM. J. JACKSON, tion. rotatably arranged with their diagonal I K. M. GILLIGAN. 

